Finding the Third Proportional to 3,218.06 and 7,085.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,218.06 : 7,085.81 = 7,085.81 : x
2. Step 2: Convert to fraction form
   3,218.06/7,085.81 = 7,085.81/x
3. Step 3: Cross multiply
   3,218.06x = 7,085.81 × 7,085.81
4. Step 4: Simplify right side
   3,218.06x = 50,208,738.79
5. Step 5: Solve for x
   x = 50,208,738.79/3,218.06
6. Step 6: Final answer
   x = 15,602.16